return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for SiH2Cl2 (dichlorosilane)

using model chemistry: B97D3/aug-cc-pCVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B97D3/aug-cc-pCVTZ
 hartrees
Energy at 0K-1211.301269
Energy at 298.15K 
HF Energy-1211.301269
Nuclear repulsion energy190.146183
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at B97D3/aug-cc-pCVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 2218 2218 64.50 226.74 0.04 0.08
2 A1 935 935 96.05 6.65 0.74 0.85
3 A1 498 498 39.84 18.52 0.04 0.08
4 A1 181 181 2.18 2.61 0.61 0.76
5 A2 696 696 0.00 4.69 0.75 0.86
6 B1 2234 2234 82.13 75.80 0.75 0.86
7 B1 581 581 27.47 1.26 0.75 0.86
8 B2 855 855 213.18 1.56 0.75 0.86
9 B2 553 553 136.25 3.38 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4375.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 4375.5 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at B97D3/aug-cc-pCVTZ
ABC
0.46635 0.08297 0.07228

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/aug-cc-pCVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.768
H2 -1.230 0.000 1.584
H3 1.230 0.000 1.584
Cl4 0.000 1.692 -0.409
Cl5 0.000 -1.692 -0.409

Atom - Atom Distances (Å)
  Si1 H2 H3 Cl4 Cl5
Si11.47631.47632.06072.0607
H21.47632.46042.88912.8891
H31.47632.46042.88912.8891
Cl42.06072.88912.88913.3831
Cl52.06072.88912.88913.3831

picture of dichlorosilane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 Si1 H3 112.878 H2 Si1 Cl4 108.404
H2 Si1 Cl5 108.404 H3 Si1 Cl4 108.404
H3 Si1 Cl5 108.404 Cl4 Si1 Cl5 110.346
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/aug-cc-pCVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 1.092      
2 H -0.202      
3 H -0.202      
4 Cl -0.344      
5 Cl -0.344      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 1.216 1.216
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -39.117 0.000 0.000
y 0.000 -41.145 0.000
z 0.000 0.000 -37.905
Traceless
 xyz
x 0.408 0.000 0.000
y 0.000 -2.634 0.000
z 0.000 0.000 2.226
Polar
3z2-r24.452
x2-y22.028
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.108 0.000 0.000
y 0.000 9.812 0.000
z 0.000 0.000 8.013


<r2> (average value of r2) Å2
<r2> 143.877
(<r2>)1/2 11.995